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[PATCH RFC v3 10/23] i386: always fill Hyper-V CPUID feature leaves from
From: |
Vitaly Kuznetsov |
Subject: |
[PATCH RFC v3 10/23] i386: always fill Hyper-V CPUID feature leaves from X86CPU data |
Date: |
Fri, 9 Oct 2020 14:18:29 +0200 |
We have all the required data in X86CPU already and as we are about to
split hyperv_handle_properties() into hyperv_expand_features()/
hyperv_fill_cpuids() we can remove the blind copy. The functional change
is that QEMU won't pass CPUID leaves it doesn't currently know about
to the guest but arguably this is a good change.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
target/i386/kvm.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 5350cd867759..56bfc8da85d0 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -1206,9 +1206,6 @@ static int hyperv_handle_properties(CPUState *cs,
}
if (cpu->hyperv_passthrough) {
- memcpy(cpuid_ent, &cpuid->entries[0],
- cpuid->nent * sizeof(cpuid->entries[0]));
-
c = cpuid_find_entry(cpuid, HV_CPUID_VENDOR_AND_MAX_FUNCTIONS, 0);
if (c) {
cpu->hyperv_vendor_id[0] = c->ebx;
@@ -1307,12 +1304,6 @@ static int hyperv_handle_properties(CPUState *cs,
goto free;
}
- if (cpu->hyperv_passthrough) {
- /* We already copied all feature words from KVM as is */
- r = cpuid->nent;
- goto free;
- }
-
c = &cpuid_ent[cpuid_i++];
c->function = HV_CPUID_VENDOR_AND_MAX_FUNCTIONS;
c->eax = hyperv_feat_enabled(cpu, HYPERV_FEAT_EVMCS) ?
--
2.25.4
- [PATCH RFC v3 00/23] i386: KVM: expand Hyper-V features early, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 01/23] WIP: update linux/headers, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 02/23] i386: fill in FEAT_HYPERV_EDX from edx instead of eax, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 03/23] i386: drop x86_cpu_get_supported_feature_word() forward declaration, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 04/23] i386: move hyperv_vendor_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 08/23] i386: keep hyperv_vendor string up-to-date, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 10/23] i386: always fill Hyper-V CPUID feature leaves from X86CPU data,
Vitaly Kuznetsov <=
- [PATCH RFC v3 09/23] i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 05/23] i386: move hyperv_interface_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 06/23] i386: move hyperv_version_id initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 07/23] i386: move hyperv_limits initialization to x86_cpu_realizefn(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 13/23] i386: introduce hv_cpuid_get_host(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 12/23] i386: introduce hyperv_feature_supported(), Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 14/23] i386: drop FEAT_HYPERV feature leaves, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 15/23] i386: introduce hv_cpuid_cache, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 11/23] i386: stop using env->features[] for filling Hyper-V CPUIDs, Vitaly Kuznetsov, 2020/10/09
- [PATCH RFC v3 17/23] i386: move eVMCS enablement to hyperv_init_vcpu(), Vitaly Kuznetsov, 2020/10/09